[INFO] fetching crate thinnable 0.3.3...
[INFO] testing thinnable-0.3.3 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate thinnable 0.3.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate thinnable 0.3.3
[INFO] finished tweaking crates.io crate thinnable 0.3.3
[INFO] tweaked toml for crates.io crate thinnable 0.3.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate thinnable 0.3.3 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc2ab8cce9ad308e11a91d1a4bae0513e00abdc3f7fcf3e35d964dac766ae9f2
[INFO] running `Command { std: "docker" "start" "-a" "bc2ab8cce9ad308e11a91d1a4bae0513e00abdc3f7fcf3e35d964dac766ae9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc2ab8cce9ad308e11a91d1a4bae0513e00abdc3f7fcf3e35d964dac766ae9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc2ab8cce9ad308e11a91d1a4bae0513e00abdc3f7fcf3e35d964dac766ae9f2", kill_on_drop: false }`
[INFO] [stdout] bc2ab8cce9ad308e11a91d1a4bae0513e00abdc3f7fcf3e35d964dac766ae9f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 727df424cf3373ddf9c1ed18d86f2522cc797dfa4a0da78d0512c781dc6dd455
[INFO] running `Command { std: "docker" "start" "-a" "727df424cf3373ddf9c1ed18d86f2522cc797dfa4a0da78d0512c781dc6dd455", kill_on_drop: false }`
[INFO] [stderr]    Compiling thinnable v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(doc_cfg, ptr_metadata, unsize)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `*const _`
[INFO] [stdout]    --> src/inner.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let data_address = ptr::addr_of!(self.0).cast();
[INFO] [stdout]     |             ^^^^^^^^^^^^   ---------------------------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `data_address` an explicit type, where the type for type parameter `U` is specified
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let data_address: *const U = ptr::addr_of!(self.0).cast();
[INFO] [stdout]     |                         ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `*mut _`
[INFO] [stdout]    --> src/inner.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let data_address = ptr::addr_of_mut!(self.0).cast();
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 130 |         let metadata = metadata(self);
[INFO] [stdout] 131 |         let ptr = ptr::from_raw_parts_mut(data_address, metadata);
[INFO] [stdout]     |                   ----------------------- ------------ type must be known at this point
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Thin`
[INFO] [stdout] note: required by a bound in `core::ptr::from_raw_parts_mut`
[INFO] [stdout]    --> /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ptr/metadata.rs:128:1
[INFO] [stdout] help: consider giving `data_address` an explicit type, where the type for type parameter `impl Thin` is specified
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let data_address: *mut U = ptr::addr_of_mut!(self.0).cast();
[INFO] [stdout]     |                         ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thinnable` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "727df424cf3373ddf9c1ed18d86f2522cc797dfa4a0da78d0512c781dc6dd455", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "727df424cf3373ddf9c1ed18d86f2522cc797dfa4a0da78d0512c781dc6dd455", kill_on_drop: false }`
[INFO] [stdout] 727df424cf3373ddf9c1ed18d86f2522cc797dfa4a0da78d0512c781dc6dd455